QUESTION 1 (a) A 1 GHz microstrip antenna was used as a signal radiator at the top conner of the office for wireless communication system. The input impedance of the microstrip antenna is 125+j75 Q2. The 10 cm length of RF cable (502) was used to connect the microstrip antenna and transceiver module. Please find the connection properties of the RF cable and microstrip antenna by using Smith chart at 1 GHz. Then, please suggest the shortest cable length if the real input impedance is required at the output of transceiver module. [12 marks]